Rolling machine



` y Y 1,633,096 June 21, 1927. H. J. HAON ET AL ROLLING MACHINE FiledApril 1 1921 :s sheets-sheet 1 A TTOHNE Y H. J. HAON ET AL June 21,1927.

ROLLING MACHINE' Filed April l. 1921 3 Sheetsheet 2 INVENTOHS A TTORNEYROLLING MACHINE Filed April 1, 1.921 :s sheets-sheet 3 Patented J une21, 1927.

UNITED STATES PATENT OFFICE.

HARRY J'. HAON AND HARRY BOICE, OF NEWBURGH, NMW YORK, ASSIGNOR TO E. I.DU PONT DE NEMOURS & COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OFi DELAWARE.

ROLLING MACHINE.

Application led April 1, 1921. Serial No. 457,642.

This invention relates to machines for folding and rolling material,such as strip fabric, upon itself, to make a folded strip of indefinitelength. The illustrated machine having found the art of making strips ofleather substitute into gimp or weltgimp ordinarily comprising a stripwith its edge folded over upon the body of the strip, and weltcomprisingv a similarly folded strip with a welt cord enclosed withinfold-we describe our invention with more particular reference to thatart, but do not confine it thereto.

'Gim and welt are used in largequantities for up olstery purposes andthe like, as in the upholstery of automobiles, and to meet competitionmust be produced rapidly and properly folded, in strips of any desiredlength, and at a minimum of expense. The present machine provides forsuch production.

One object of our invention is to provide a strip-rolling machine havinginterchangeable devices for rolling the strip, whereby the machine maybe adapted to the rolling of strips of different widths. A

Another object is to rovide a machinue for making strips into e1thergimp or welt as desired.

Another object is to provide a machine for making welt and havingautomatically operative means for stopping the machine should q a knotor the like be present in the welt cord being fed to the machine.

To these ends, and also to improve generally upon machines and devicesof the character indicated, our invention consists in the variousmatters' hereinafter described and claimed.

The accompanying drawings illustrate a machine embodying our invention,but we do not conne our invention thereto. In these drawings Figure 1 isa front elevation with the rollers and their bearings sectionedsubstantially on the line 1--1, in Fig. 2, and with certain of the partslying forward of the rollers omitted; v

Fivure 2 is a side elevation looking from the right in Figure 1;

Figure 3 is a'simpliied plan view of the principal parts for handlingthe materials;

Figure 4 is a conventional fragmental sectional view of the rollingflanges and a portion of gimp being rolled;

articular usefulness in' ly, a frame 1, on which are carried the fpressing means, or rolling elements, designated generally as 2, thedriving means 3 for the rolling elements, the fabricstri suppliers 4,the ,cord feeders 5, and the fol ing devices or Ahorns 6. The rollingelements 2 comprise a pair of driven rollers 7 and 8.

.Each roller includes a rolling fiange, or

pressing portion, 7 or 8a mated each with the other, and each desirablyof substan? tially the l width of its mate. These receive between themthe strip ,of material,

S, and press its edge, which has been turned over by the vrelatedfolding horn 6, into close contact with the body of the strip.Previously to being fed to the rollers the fabric, S, is coated withadhesive upon that so Y side of the strip, the upper side in thedrawings, down on to which the turned over edge is pressed; the rollersapply the pressure reuired to cause the folded over edge to adherefirmly to the body of the strip, making the gimp or welt. In making impthe edge is simply folded onto and stuc to the body, see G Fig. 4;whereas in makin welt a cord C, fed to the horn 6 from a feeder 5, isplaced upon the body of the strip and the edge folded over it to includeitin the fold, and the edge stuck to the body, as at W Fig. 5. Inoperation, with a strip S fed to the side of the machine where therollers are turning toward each other, the stri will be carried betweenthe rollers an pressed, and the cord C will be drawn into the machinewith the strip.

According to our invention a pluralityof` rolling ianges, each of adifferent width, are provided, for each roller, and each isinterchangeable with the others, on the respective supporting shank, as9. or 10, of the roller.;v

Conveniently the'ilanges are portions of collars, as 11 and 12,removably carried on the Shanks. In this way w provide a machine readilyadaptable to t e making of folded strips of different widths, sincecollars having flanges of the width desirable for the particular stripto be made can be selected and operatively installed in the machine atwill. It is desirable that pressing portions, g. flanges, be so matchedwith the strip to be made that the portions will press upon a sufficientwidth of the turned over edge to insure good joining ofthe edge and thebody, and yet the crease, or edge of the fold, will not be subjected topressure liable to crack the leather-substitute coating, or otherwiseinjure the product. Also, in the case of welt the pressing portionsshould be narrow enough to give relief for the cords (Fig. 5). It willbe seen that the present arrangef ment of interchangeable flanges ofdifferent widths provides for the use of just the width flange bestadapted to the particular article to be made.

Desirably, andv as shown, each roller, as assembled, may include aplurality of the flanges, as 7a and 7b and 8a and 8b. This provides forthe rolling of a plurality of strips at the same time. The additionalflanges, as 7b and 8b, may be, like 7L and 8a, certain of the units ofthe sets of interchangeable flanges. Corresponding to the flanges 7a and8a, the other flanges, as 7b and 8", are carrie-d by collars such as 13and 14 respectively.

In the illustrated machine the structure conveniently provides for thechanging of the collars, as 11 and 13 on the upper shank 9, and 12 and14 on the lower shank 10, to thereby supply such width flanges as aredesired, and is as follows The collars are slipped upon the Shanks asindicated and backed against the shoulders 9a and 10a on the Shanks.They are spaced from each other b the spacers 15 and 16, interchangeablewit spacers of other widths, and of the particular width ydesired togive proper clearance between the various strips to be folded in thespecified instance, are keyed to the shanks by keys 18 and 19, and arefollowed by the followers 9b and 10b screwed on the Shanks as indicatedat 20 and 21. The Shanks are mounted for rotation in boxes 22, 22, and23, 23, having substantially semi-cylindrical bearing surfaces 22a and23, the one Vembracing the lower half of the shank 10 and the other theupper half of the shank 9. VThe boxes are removably received in openings24 in the frame, the flanges 22b and 23b of the boxes overlying themargins of the openings 24 to hold the boxes in the frame. Above theupper roller 7 the openings 24 are each open at one side, as at 25, theheight of each opening 25 being sufficient to permit the removal-of therollers and boxes. When it is ydesired to remove the rollers, to permitchanging the -collars and spacers, the hereafter describedpressure-applying parts, 26,

27 and so forth, are disassembled, the upper roller and its boxes liftedup and taken out through the openings 25 and the lower roller lifted upand taken out. To remove the collars and spacers from the Shanks thegears 31 and 32 are removed, the followers 9b and 10b unscrewed andslipped from the Shanks, and the collars and spacers slipped off asdesired, the box 23 between the follower 9b and the gear 32 being ofcourse removed. When the desired rearrangements and substitutions havebeen made, the rollers are remounted in the frame in an evident manner.

The upper roller is urged toward the lower, to give the amount ofpressure between the flanges 7a and 8a, etc. necessary to cause properadherence of the fold to the bodyof the strip, by expanding springs, orurging means, 26, 26 resting upon the upper sides of cthe boxes 23 andlocated thereon by th top, or crosswise, portions of the flanges 23".The tension of the springs is regulated by screws, or regulating means,27, pref- ,erably working through an equalizing arrangement, as the bars28 and 29 and screw 30. The teeth of the gears 31 and 32 between therollers are of-course of sufficient depth to provide the 'desiredfreedom of approach of the upper to the lower roller. The operation ofthese pressure applying parts will be evident.

The rollers 7 and 8 are driven in a direction to carry the strips intothe machine from the left (Fig. 2) side. The roller 7 is driven from theroller 8 through the gears 31 and 32 on the rollers 8 and 7respectively, while the roller 8 is driven directly "from the drivingmeans 3. This means comprises the driving pulley 3 carried loose andslidable upon the 'shaft 33, the gear 34 fast upon the shaft 33, thegear 35 fast on the shank 10 of the lower roller 8 and in mesh with thegear 34, and the friction disc 36 fast on the shaft 33 and for drivenconnection with the pulley. Cooperative with the driving means ismechanism for controlling the position of the pulley 3 with respect tothe disc 36, to make or break the drive, and comprising devices forshifting the pulle 3 along the shaft to bring its friction sur ace 3aintov or f out of frictional driving connection with the disc. 2 Theseshifting devices according to our invention preferably include anarrangement whereby should a welt cord. feeding to the machine, have aknot in it, 'the drive will be broken'and the rollers cease to bedriven. As an adjunct to this arrangement, and in further accordancewith our invention, there is preferably provided a braking means for therollers, automaticallyoperative with the breaking of the drive to makeyet surer that the rollers shall stop sufciently soon to avoiddilliculties with the knotted cord. Thus, a control lever 37 isfulcrumed to the frame at 38 and, by linkwork 47, 50, 54, later to bedescribed 4in detail, is connected with a shifting-yoke device 39, orshift-able element, resting loosely between the flanges 40d of a drum 40Which is loose and slidable on the shaft 33 but fast to the slidableloose driving pulley 3. The iever is also connected with a brake disc 41by additional linkwork 59, 57. The disc is loose on, and slidablerelative to, the shaft 33 but is held against rotation `by the swivelscrews 42. It s'located at the opposite side of the friction disc 36from the pulley.

When the upper, or handle, end of the lever 37 is at the left (as theparts are shown in Fig. 1) the pulley is at the right in driving contactwith the disc 36 and the drive is iliade; and the brake disc is at theright and inactive. When the lever is moved to the right, the pulley isshifted to the left and the drive broken; and the brake disc is moved tothe left into Contact with the friction disc 36, and brakes. The leveris urgedto the right, or non-driving and braking position, by thecontracting spring 43 attached at its ends to the frame 1 and the lever;but the lever is normally held against movement by a latch 44, ormovable element. This latch is hinged to the .frame at 45 for upwardswinging, but is prevented from downward swinging by the frame as shown.Then in lowered or horizontal position, it lies in the path of movementof thev lever. It is provided with apertures 46 smaller than the knots,kinks, and so forth, which it is desired shall stop the machine, and thecords being fed are passed through these apertures. Evidently, when aknot reaches the bottom of the latch, the knot will lift the latch outof the way of the lever, permitting the spring 43 to move the latter andstop the machine.

It will benoted that the latch 44 with its apertures 46 for the cordsnotl only serves as a latch (and an element of the drivecontrollingmeans) but also lserves as an -element of the means for guiding andpresenting the cords to the rollers. Thus, as shown in Figure 3, themember 44 is located between the members 5 and 78 (hereafter mentioned)and serves to guide and control he cords in their passage between suchmemers.

The previously mentioned linkwork for connecting the lever 37 with thepulleyshifting yoke 39 and the brake disc 41 cornprises a reach lever 47fulcrumed on the frame 1 at 48 and pivoted to the lower end of the lever37 at 49 and to a sliding bar 50 at 51. The bar 50 is slidabl mounted atone end in the aperture 52 o a bracket 53 on the frame and has its.other end pivoted toa lever 54 at 81. This latter lever is fulcrumed at55 to a bracket 56 carried by the frame and at its upper end has thebefore-mentioned pulley-shifting yoke 39.

Another lever, 57, is fulcrumed to the bracket f .between which isswivelled the brake disc 41.

Of course, the various connections are sufficiently loose to permit suchdepartures from simple straight line or arcuate movements as are calledfor, and the elements of the linkage are proportioned to give thedesired extent of movement to the pulley and the brake disc. It will beseen that the described arrangement gives, upon movement of the lever37, the before-described shifts to the pulley and the brake disc.

The folding horns 6 are mounted in any suitable manner before therollers 7 and 8 and each in alignment with the particular pair ofpressure applying flanges with which it is intended to cooperate. Theymay be of any desired character adapted to the ends sought. In Figures 6and 7 we have illustrated in more or less detail a hornV having one sideadapted to fold the strip and also to guide a cordinto the fold, andhavin the other side adapted merely to fold. In 1g. 3 we have indicated,in cooperation with the4 flange 7a (and flange 8a), a horn designed moreparticularly for mere folding, and have indicated, in cooperation bothwith the .flange 7E (and flange 8b) and with the cord guides 5, 5, ahorn having each side arranged to fold and also to guide a cord into thefold. As will be evident, the horn for merely folding at each side mayin'detail have each side substantially like the merely-folding side ofthe horn illustrated in Figs. 6 and 7; and the horn for guiding cord ateach side may at each side have a construction substantially like thatof the folding-and-cordso l' guiding side of the horn illustrated inFigs.

6 and 7.

The horn shown in Figs. 6 and 7 comprises a body portion in thecharacter of a flattened tube 63 providing a strip passage 64 extendingtherethrough, the body havlng a turned down apron 63a at its receivingend. Along its sides, and in increasing e'xtent from the receiving endto the discharging end, the body is folded over as indicated at 65 and66. The upper wall of the tube is cut away at the delivery end, andsubstantially as indicated at a and b, to provide a tongue 67, and alsoto remove the undersidesof the folds 65 and 66 adjacent the tongue. Acord tube 68 is fastened, as by solder, to the upper side of the tubeand has its forward portion underlyin the fold 66 and has its exit 69placed adJacent the tongue 67. A portion` of the tube for a shortdistance back from the discharge end is desirably cutaway along its sidefacing the substantially vertical wall of the fold, as indicated at c.The folds and 66 are of a width suitable for use in making the turnoverdesired for the strip of fabric and lie sufficiently close to the bodyproper of the horn to bring the turn-over into proper p0- sition withrespect to the body of the strip of fabric, ready for passing betweenthe pressing flanges of the machine. As will be seen, the strip offabric S fed in at the entrance of ythe horn has its edges graduallyturned over, as the strip moves throu h the horn, and emerges with itsedges fol ed to overlie the body, the cord fed through the tube lyingwithin the fold made by the cordfeeding side of the horn and close tothe line of the fold. The horn may he mounted on the frame in anydesired manner, as by the horns cross bar being clamped to the frame inany convenient manner as with bolts 71 (Fig. 2).

The cords may be supplied and guided to the horn in an preferred manner,it being desirable that riven means be provided for pulling the cordsfrom the source of supply, relieving the rollers from this duty. As hereillustrated (Fig. 2) each cord from any source of supply (not shown) isrun through a guide tube 72 and passed once around a sheave 73anti-clockwise. The sheaves are driven from the gear 35 through thepulley 74 fast connected with the driven shaft 10, the belt 75, and thepulley 76 fast on the driving shaft 77 which carries the sheaves fastthereon. From its sheave, a cord is passed through guide tubes 78 and 5to the horn. The guides 78, one for each cord, are

conveniently mounted on the forward lower 'tion to deliver substantiallyin the horizontal plane of the horn, the support having its uprightportions carried on the frame 1n non-interfering relation to the latch44.

The strips to be folded are carried on the previously mentioned strip supliers or rolls 1, one for each strip, rotatab y mounted on the bar 80in substantial alignment each with its rela-ted horn.

In Fig. 8 we have shown a roller, as 7 or 8, supplied with variousflange-carrying collars and spacers and illustrating one of the manypossible arrangements, and several flanges and spacers of differentwidths. The spacers are indicated at 15a, 15b, and the collars at 11a,11", 11. As will be understood, the width of 'a machine between thebearings ma be such as called for to accommodate rol ers having thenumber and widths of collars and spacers desired; and, in assembling aroller, the combined widths of the collars and spacers used should besubstantially equal to the distance from the abutment, as 9a to thethreads, as 20.

If desired one of the rollers, as 7, may, as shown, have its shank, as9, hollow to receive a heating means, such as an electric coil (notshown).

Although we have shown a machine arranged for makin strip of welt, itwil of course be understood that an other desired arrangement may beresorte to to meet particular needs, as for example, should it be.desired to roll a plurality of strips of gimp or a plurality of stripsof welt and all requiring the same, or different, width flanges, and s0forth.

l. In a machine for making foldedstrips, a pair of matched rollers toreceive the folded strip between them and`press the fold, each rollerhaving a' pressing portion upstanding therefrom to give relief to alfoldat each side of the strip, and mated with and opposite the pressingportion of the other roller; each of said rolle-rs comprising a flangeof greater radial dimension than the body of the` roller at each side ofthe flange thereof to present said upstanding pressing portion withrelief at each side, and also comprising devices whereby other flangesof widths different from that of said flange may be substituted for suchflange; and means for driving said rollers.

2. In a machine for making folded strips, a pair of mated rollers toreceive the folded strip between them and press the fold, each roller'having a pressing portion upstanding therefrom to give relief to a foldat each side of the strip, and mated with and opposite the pressingportion `vof the other; each of said rollers comprising a shankcarryingv an upstanding abutment, a flange-presenting element having aflange of greater radial dimension than the body of the roller at eachside thereof to present said upstanding pressing portion with relief ateach side, and removable locking means for such element comprising acollar fixable upon said shank and holding said element onJ said shankbetween the collar and said abutment whereby other flan e-presentingelements having flanges of di erent widths from that of said flange maybe substituted for such flange; and means for driving said rollers.

3. In a machine for simultaneously making a pair of folded strips, apair of matched rollers to receive thefolded strips between them andpress the folds, each roller having a pair of pressing portionsupstanding theregive relief at each side of a strip,

a strip of gimp and a` `inng a spacer for spacing the flanges along theroller, and devices whereby other spacers of widths different from thatof said spacer may be substituted for such spacer, and

means for driving said rollers.

4. In a machine for simultaneously makinga plurality of folded strips, apair of pressing rollers, each roller presenting a plurality ofstrip-pressing portions outstanding from the body of the roller to giverelief at each side and each pressing portion being paired with apressing portion of the other roller, means for individually presentinga strip to be pressed to each pair of pressing portions, and means fordriving said rollers. Y

5. In a welt-cord-controlled mechanism for combination in a machine formaking folded strips with a welt-cord inthe fold, such machinepresenting a pair of mated rollers to receive the folded strips betweenthem and press the fold, means for present-- in a welt-cord to therollers and means for driving said rollers; in combination, a member formounting before said rollers and having a welt-cord passage therein ofless diameter than knots in the cord, such member being adapted to bemounted on said machine for movement by a knot, and mechanism forcontrolling said driving means of the machine, such mechanism includingsaid member and means correlating said member and said driving means fordisconnection of the driving means uponv movement of said member by aknot.

6. In a welt-cord-controlled mechanism for combination in a machine formakin folded strips with a Welt-cord in the fol such machine presentin apair of mated rollers to receive the fo ded strips between them andpress the fold, means for presenting a welt-cord to the rollers andmeans for driving said rollers; in combination, a shiftable element foroperative connection to the driving means for rendering the drivingmeans inactive upon shifting of said element, a lever, linkworkconnecting said lever and said element for shifting said element uponmovement of said lever, means for moving said leve'r, a stop for saidlever for preventing its movement and in the character of a platenormally lying in the path of a movement of said lever but swingable outof said path, said plate having a cord aperture therein located for thecord being presented passing therethrough in the direction of swing ofsaid plate, whereby, when a knot in said cord strikes, and swings saidplate out of the path of'said lever, said moving means moves said lever,said linkwork operates said shiftable element, and the roller drive isbroken.

Inu testimony whereof we aiix our signatures.

HARRY J. I-IAON. HARRY BOICE.

